University of Texas Health Science Center in Dallas has found that monounsaturated oils such as olive oil are more protective of HDL (the good cholesterol) levels than polyunsaturated fats such as corn oil and soybean oil. Olive oil reduces total cholesterol without lowering HDL.
Olive oil has several other medical application in addition to it’s heart protective role. such as:
DIGESTION: Olive oil can also help the digestive system to function more efficiently. It is thought to reduce gastric acidity and to be effective in protecting against ulcers and gastritis. It also stimulates bile secretion and regulates the emptying of the gallbladder, reducing the risk of gallstones.
INTESTINAL FUNCTION: Olive oil is the edible fat most easily absorbed by the intestines and regulates the passage of food through the intestines. One or two tablespoons of olive oil has a positive effect as a laxative.
BONE AND BRAIN DEVELOPMENT: Olive oil also promotes bone growth by fighting calcium loss and permits improved bone materialization in both children and adults due to its chemical composition. It is considered a good food choice for expectant and nursing mothers since it encourages normal brain development in the infant before and after birth. At the other end of the spectrum, olive oil may be helpful in preventing the wear and tear of age on the brain functions and the aging of organs and tissues in general.
It has been also proved that the use of olive oil in nutrition helps to sustain:
1. Human metabolism at a good balance, body’s growth and bone growth at a good level. It is obvious that olive oil means good health and development for our children.
2. Good level of Vitamin E in our body. This vitamin has the property to delay the change of the cellular structure which leads to natural decadence, the people’s aging, so one of the best medicaments for delaying aging is the olive oil. On the other hand, as we all know, Vitamin E improves our sexual life. So one can say that olive oil is by itself an aphrodisiac!
It is also soothing to mucous membrane and to dissolve cholesterol. Olive oil is useful externally for burns, bruises, insect bites, sprains, and intense itching. With alcohol it makes a good hair tonic, and with oil of rosemary a good treatment for dandruff. One of its most common uses is as a base for liniments and ointments.
 It is amazing how many applications there are for olive oil including; skin care, cosmetics, cooking and medicinal. Olive Oil is a staple in the Mediterranean diet and is used more commonly than butter. The use of Olive Oil has been linked to reduced cholesterol and a protection against several types of cancer.
Extra virgin olive oil is particularly rich in the phenolic antioxidants as well as squalene and oleic acid(a monounsaturated omega-9 fatty acid) , and high consumption of the foregoing in the diet provides considerable protection against colon, breast and skin cancer, coronary heart disease and aging by inhibiting oxidative stress.
Research has shown that scavenging of the hydroxyl radical was significantly higher among extracts of olive oil. This effect was only minimal in seed oils. In addition to their direct antioxidant capacity, extracts of olive oil are also potent inhibitors of xanthine oxidase activity.
A constant high olive oil intake in the diet, especially extra virgin olive oil, provides a constant supply of antioxidants. This may reduce oxidative stress through inhibition of lipid peroxidation, a factor that is currently linked to a host of diseases such as cancer and heart disease.
 The same study also concluded that a diet high in olive oil may reduce blood pressure levels due to its polyphenol content. Polyphenols are potent antioxidants that help the arteries to dilate thereby reducing blood pressure.
Last but not the least , is that oilve oil dessolves useful substances from the food that can not be absorbed by the human body.It can be used in every form of cooking. It can be used in salads or added in the cooking process of almost any recipe. Olive Oil is the healthiest type of oil with 0% cholesterol, rich in Vitamins against aging and perfect even for frying dishes. Olive oil is the best nutritional gift we can offer to ourselves. Olive oil helps us keep good in health making our life pleasant.